MCP6142-E/MS Microchip Technology, MCP6142-E/MS Datasheet - Page 16

• Manufacturer Part Number: MCP6142-E/MS
• Description: IC OPAMP 1.4V DUAL R-R 8MSOP
• Manufacturer: Microchip Technology

Specifications of MCP6142-E/MS

• Slew Rate: 0.003 V/µs
• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 100kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 3000µV
• Current - Supply: 0.6µA
• Current - Output / Channel: 20mA
• Voltage - Supply, Single/dual (±): 1.4 V ~ 6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Op Amp Type: Rail To Rail
• No. Of Amplifiers: 2
• Bandwidth: 100kHz
• Supply Voltage Range: 1.4V To 6V
• Amplifier Case Style: MSOP
• No. Of Pins: 8
• Number Of Channels: 2
• Voltage Gain Db: 115 dB
• Common Mode Rejection Ratio (min): 60 dB
• Input Offset Voltage: 3 mV
• Operating Supply Voltage: 3 V, 5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details

MCP6141/2/3/4
4.2
There are two specifications that describe the output
swing capability of the MCP6141/2/3/4 family of op
amps. The first specification (Maximum Output Voltage
Swing) defines the absolute maximum swing that can
be achieved under the specified load condition. Thus,
the output voltage swings to within 10 mV of either
supply rail with a 50 kΩ load to V
shows how the output voltage is limited when the input
goes beyond the linear region of operation.
The second specification that describes the output
swing capability of these amplifiers is the Linear Output
Voltage
maximum output swing that can be achieved while the
amplifier still operates in its linear region. To verify
linear operation in this range, the large signal DC
Open-Loop Gain (A
supply rails. The measurement must meet the specified
A
4.3
The MCP6141/2/3/4 op amp family has outstanding
quiescent current, which supports battery-powered
applications. There is minimal quiescent current
glitching when Chip Select (CS) is raised or lowered.
This prevents excessive current draw, and reduced
battery life, when the part is turned off or on.
Heavy resistive loads at the output can cause
excessive battery drain. Driving a DC voltage of 2.5V
across a 100 kΩ load resistor will cause the supply
current to increase by 25 µA, depleting the battery 43
times as fast as I
High frequency signals (fast edge rate) across
capacitive loads will also significantly increase supply
current. For instance, a 0.1 µF capacitor at the output
presents an AC impedance of 15.9 kΩ (1/2πfC) to a
100 Hz sinewave. It can be shown that the average
power drawn from the battery by a 5.0 V
(1.77 V
EQUATION 4-1:
This will drain the battery 18 times as fast as I
DS21668D-page 16
OL
P
condition in the specification table.
Supply
rms
Rail-to-Rail Output
Output Loads and Battery Life
Range.
= (V
), under these conditions, is:
= (5V)(0.6 µA + 5.0V
= 3.0 µW + 50 µW
DD
Q
- V
(0.6 µA, typical) alone.
OL
This
SS
) is measured at points inside the
) (I
Q
specification
+ V
L(p-p)
p-p
·
100Hz
f C
DD
L
/2.
)
·
P-P
defines
0.1µF)
Figure 2-10
sinewave
Q
alone.
the
4.4
4.4.1
The MCP6141/2/3/4 op amp family is designed to give
high bandwidth and slew rate for circuits with high noise
gain (G
be realized using the MCP6041/2/3/4 op amp family;
this simplifies design and implementation issues.
Noise gain is defined to be the gain from a voltage
source at the non-inverting input to the output when all
other voltage sources are zeroed (shorted out). Noise
gain is independent of signal gain and depends only on
components in the feedback loop. The amplifier circuits
in
calculated as follows:
EQUATION 4-2:
In order for the amplifiers to be stable, the noise gain
should meet the specified minimum noise gain. Note
that a noise gain of G
non-inverting signal gain of G = +10 V/V, or to an
inverting signal gain of G = -9 V/V.
FIGURE 4-3:
Gain Configuration.
FIGURE 4-4:
Gain Configuration.
Figure 4-3
V
V
N
IN
IN
) or signal gain. Low gain applications should
Stability
NOISE GAIN
R
R
and
R
R
G
IN
IN
G
G
N
Figure 4-4
=
Noise Gain for Non-inverting
Noise Gain for Inverting
1
MCP614X
MCP614X
N
© 2009 Microchip Technology Inc.
+
= +10 V/V corresponds to a
------ -
R
R
F
G
R
R
≥
F
F
have their noise gain
10 V/V
V
V
OUT
OUT